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U. S. COPYRIGHT 

BEN DAY. INC. 

1920 



FEB 13 iy<^u 



)CI.A5597(J8 



/y..O j 






THE BEN DAY 

SHADING MEDIUM APPARATUS 



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HOW TO WORK IT 



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SELECTIONS 



No. L— 13 X lA 





No. 2.— 13 X 13 





No. 5.— 13 X 13 



No. 7.— 13 X 13 



N,j. 1.— y^i x')34 



iNo. 8.— 13 X 13 



No. 9.— 13 X 13 



No. 11.— 13 X 13 



No. 16.-9^4 X 9k 



No. 432.— 914 X Uii 



No. 433.— 9M X 1414 



No. 437.-934 X 14>4 



No. 440.— 93-4 X 143-4 



No. 507.— 13 X 13 



No. 509.— 9J4 X 143/4 



No. 526.-934 X 1434 



No. 52 (.—93,4 X 1434 



No. 533. — Half-tone 
85 to inch— 9 H' x 9?4 



No. 534.— Half-tone No. 535.— Half-tone No. 536.— Half-tone 

100 to inch— 9M x 9ji 120 to inch- 9M x 9H 133 to inch— 9M x 9M 

FROM PROOF BOOK OF 
THE BEN DAY SHADING MEDIUMS 



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MECHANICAL ADJUNCTS 

OF THE 

BEN DAY SHADING MEDIUMS 

THE HOLDFAST; MICROMETRIC ADJUSTERS; FRAME CLAMP; PROCESS 
APPARATUS; INKING PAD; TUBULAR INKING ROLLER, ETC. 







PLACING THE HOLDFAST ON A LITHOGRAPHIC DRAWING 

It may be lifted by its handles to any part of the work 




THE HOLDFAST MOUNTED ON A LITHOGRAPHIC DRAWING 

Side rods drawn downward. The operator is transferring a print from 
an inked Shading Medium by means of a rubber pressing roller 



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6 



SIDE VIEW, RIGHT, OF THE HOLDFAST 




DETAIL OF ILLUSTRATIONS— ALL PARTS 

A, base; A% studs of base; A', base holes for screws to bind machine to table, if desired; A<^,lifting 
handles; B, cross-rod, bearing sector wings CC, which raise or lower side-rods DD, and forward 
rod D''-. C8, C^, illustrate the elevating movement of CC, controlled by clamping screws C^, C^. 
The extension movement of DD is effected by drawing DD through the boxes C, C^ controlling 
same by the clamping screws C^, C^. D* carries the adjusters E^ and E", the pintles of which 
at EL3, Ef3, carry the frame clamp F which holds the Printing Film. The front index wheels 
EL4^ ER4^ shift the Printing Film for increasing color in a tint perpendicularly. The side index 
wheel ER9, shifts it for color increase laterally. E^i, E"!, are sleeves of E^ and E", sliding on 
D* to engage E^- and E^* with F. They also revolve on D* to adjust the film frame carried by F 
to a level on the drawing. EL- and E^^ bind E^ and E" to D*. E^s, E^^, are guide marks by 
which to regulate the movement of the index wheels E^* and E^*, when they operate EL3 and 
ER3 with F5, F5, backward or forward. E^^, is the guide mark for the side index wheel E"'. 
F is attached to the film frame by the lever F^. F^ slides the lever bar P, which opens or 
doses the sliding blocks F'', F^ which lock the film frame against the clamp-lips F*, F*. F^, F^, 
are socketted ears which engage the adjuster pintles E^. E^^, holding the Shading Medium in 
registered position. The ears are so shaped that they sustain the Medium at a resting slant 
ao-ainst the barrels of E^ and E" when it is turned up and backward from the work. 



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THE BEN DAY SHADING MEDIUMS 

AND 

THEIR MECHANICAL ADJUNCTS 



THE HOLDFAST APPARATUS 

[SEE ILLUSTRATIONS] 

Figures 1 and 2 show all parts of the machine. The functions of the parts 
are detailed under Figure 1. 

Before starting work, see that the apparatus is adjusted, in connection with 
the Frame-Clamped Shading Medium to the level of the drawing, and that all 

/ 




I' THE HOLDFAST ON THE DRAWING TABLE APPLIED TO 

|l LITHOGRAPHIC WORK 

I binding screws are fastened. The Adjusters, E^ and E^ should lie level on the 

I I cross-bar D4. Lock E^ to the bar first. Take the Frame-Clamped Shading 
|; Medium and engage the right ear socket of the Frame Clamp at F5 with the 
I ' stationary pintle point of E^. Then move the Adjuster EL along the bar D* until 
I its spring pintle engages the left ear socket of the Frame Clamp at F^. It should 
I engage this firmly but with sufficient spring-play after it is locked to the bar to 
I permit the release of the Frame Clamp from between the two pintles for the ink- 
■ ing of the Shading Medium. 

I Before laying a tint, see that all three Adjuster Wheels register at the 

I guide marks EL5, £^5, E^^; also that the scratch-lines EL6, ER6 line with the 

I scratch-lines opposite them on the fixed Adjuster parts. Operations are thus 

I begun with the Adjusters in a middle field, ready for increased color movements 

I in a forward, backward or lateral direction. The two front dial wheels, moved 

I together to corresponding degrees, increase color vertically; the right side dial 

I wheel, laterally. As the mesh values of tints differ, so the movements given the 

I micrometric wheels must vary, in finer or greater degree, dependent upon the tint 

I in use. A mechanical stipple such as No. 507 may be closed into a solid line, 

I if necessary, by a series of movements aggregating 3^2 to 4 degrees. 
I After each movement and tint-lay, the Shading Medium must be disengaged 

I for re-inking. Press the thumb against the left ear of the Frame Clamp ; this 

I pushes back the spring pintle of EL, thus relieving the Medium. Then place the 

I Medium upon the aluminum inking pad, re-ink and re-adjust for the succeeding 

I movement and lay. 

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The Frame Clamp fits any film frame. It has resting ears at F5, F5, which 
bear back upon the sleeves of the Adjusters at ELi, E^i, there sustaining the Medium 
at a resting slant when it is turned backward from the drawing. The Medium 
should be turned back gently (not thrown back) to preserve the registry of the 
Shading Medium. 

THE BEN DAY DRAWING BOARD APPARATUS 

This is for process-work on cardboard, or direct work on zinc or copper 
plates. (See illustration.) H is the drawing board, equipped with metal side 
grooves H3, H3, along which move two sliding clamps H4, H4. These clamps have 
vertical sliding posts H4A, H4A, which bear the cross-bar H5. The sliding posts 




THE BEN DAY DRAWING BOARD APPARATUS 
FOR WORK ON COPPER, ZINC OR CARDBOARD 
H Drawing board. H', Side battens of board. H% Under battens. H', H\ Channeled side bars. H^ H\ 
Clamps sliding on H^, H^, holding cross-rod H=. H-iA, H*A, Vertical sliding posts of H*. H*B. H-"*, 
Bearings of H** carrying H=. H^S H*C, Screwheads clamping H* to H^ H^", H*", Screw-heads clamping 
vertical posts H^A^ H^*. R*^, U*^, Screw-heads clamping cross-rod H^. H^f, H*f, End stops of W". H\ 
Cross-rod carrying adjusters E^- and E". H', Wood-block suggested for use under rear of drawing board to 
hold board at working slant. EK E", Micrometric adjusters. F, Single lever frame clamp. 

move up or down through the clamps H*, H*, raising or lowering the cross-bar H5. 
H5 carries the Adjusters EL, ER, which in turn hold the Frame Clamp F and the 
Shading Medium over the drawing. 

The drawing on cardboard or plate should be fastened to the drawing board 
by flat tacks. Before starting work see that the Shading Medium has been 
adjusted to a perfect level on the drawing by the operation, up or down, of H^A, 
H4A, fastened by H^D, H4D. All binding screws must be likewise secured. Before 
work, see that the three micrometer wheels of the Adjusters are registered at with 
the guide marks EL6 and ER6 lining with the scratch marks on the Adjuster Boxes. 



GENERAL RULES FOR WORKING 

Inking the Medium— The Inking Pad— The Inking Slab— The Tubular Roller 

Laying the Tint — Cleaning the Film 

Before inking the Medium, see that the Frame Clamp is placed flat upon the 

frame and locked to h securely by the lever Fi. Place the Medium upon its 

proper size inking pad. The Medium should rest evenly upon the pad, with the 

Frame Clamp projecting beyond the table-edge, to free it from chance dislocation. 

The ink slab should be of stone, about 16 x 16 inches. Do not use glass. 

Any high-grade transfer ink is good for stone. Day's ink may be used for stone 



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and for photo-engraving work on cardboard. For direct work on metal, any of 
the good market inks used in the shops is practicable. With a small palette knife 
spread a layer of ink across the top of the slab. Use this as a "fountain" from 
which to feed by rolling the whole of the slab by means of the Ben Day Tubular 
Roller. Charge the slab evenly but not too heavily. Then pass the roller several 
times over the Shading Medium, supported by the inking pad, rolling not back 
and forth, but in one direction only and toivard you, until the Medium is properly 
charged with ink. Light tints require more delicate inking than dark tints. 

When transferring the film tint to the d raising by the stylus or rubber roller, 
obtain the full value of the tint — no more, no less — regulating your pressure to 
that end. If the back of the film needs lubrication for the working of the stylus, 
use vaseline, distributed and rubbed off again. If parts of the drawing not being 



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PRESSING TOOLS 

1. Pointed Stylus. 2. Flat Stylus. 3. Hook Stylus. 4. V^ inch Rubber Roller. 5. 13 o inch Rubber Roller 

^vorked upon require protection, stencils may be cut out of French folio paper. 
If using gum or gamboge as a stop-out on stone or metal, see that the stop-out is 
dry before working ^vith the Medium. 

Have a safety can ^vith benzine and soft rags for cleaning the Mediums, 
ink slab and inking roller. Clean everything at the end of the day's work to avoid 
ink hardening. Do not use lye to clean the inking roller. Do not use a film that 
has been in use since the day before without first washing it off with benzine. 
Fan it to exhaust the benzine. Even on the same day, if the film is of fine tex- 
ture, such as a half-tone — and has already been used on another subject — clean 
it before using it ; otherwise it may show unequal color in the tint at those parts 
which, having been unused, have hence been supercharged. Keep the ink slab 
covered when not in use. Do not leave the films lying face up. Avoid dust. 
Keep the films free from resin powder. 

If any of the mechanical adjuncts should get out of order, refer to the 
detailed illustrations Figures 1 and 2 and write or telegraph the number or symbol 
of the part requiring replacement. 

There should be a special space in the Art Department for the Ben Day 
Shading Medium Service. The ^vork-table should be steady and level ; it should 
have north light, if possible, and Jje'pwaW'nQiaany radiator. 



INKING A SHADING MEDIUM 




THE MEDIUM MOUNTED ON THE INKING PAD 

The Medium should be placed evenly on the aluminum pad, with the Frame Clamp extending 
beyond the table edge, so that the clamp may not be displaced while inking. 




THE BEN DAY TUBULAR ROLLER 

Has hollow core and aluminum frame. The roller, not bound to core, is free to shrink or expand 
according to climatic changes, thus ensuring a constantly even plane. 



ROLLER PARTS: — G'. Aluminum frame. G^, Guard, holding handle from ink slab. 

G^, Handle. G^. Hollow mandrel. G', Tubular roller. G", End cap, fixed. G', End cap, 
threaded, fitting screw-hub of G* (removable when drawing roller skin off or on G^). G', G', 
Bearings for the support of G'°. G'", Axle rod with screw-head at left end and thread at right, 
for engaging G' '. G' ', Binding nut of G'". — To remove a roller skin, unscrew G' ', unscrew 
and draw out G'", unscrew G' and draw G^ off G''. — To replace a roller skin, draw it on G*, 
evenly; screw on G', replace G'° through G' and G*, screwing it back into G', then screw 
on nut G' '. 



BEN DAY, Inc. 



NEW YORK, U. S. A.. AND LONDON. ENGLAND 



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